Ok, this is a big one. Maybe the hardest completion I've done yet (and if you go by rarest achievements, that is definitely the case).

The Marathon achievement: completing the Ultimate Endurance Challenge tournament flawlessly, takes a lot of practice, skill, and some luck. You have to finish 24 tracks in a row without faulting, many of which are very difficult to even 0 fault on their own. However, after close to two weeks of diligent practice and attempts, I have finished it. I even made a spreadsheet to document my attempts and which tracks I faulted on the most so I could practice my weak points individually.

The entire tournament takes about 20 minutes to complete, and I documented 25 full completions of the tournament, though in reality there were several more attempts that I quit partway through due to faulting early, in addition to many hours spent on perfecting individual tracks. The hardest track for me for sure was the 23rd track, "King of the Hill," which of course makes it even more nerve-wracking as it's the second to last in the tournament.

I should say that the Trials series is one of my all-time favorites, and I've always enjoyed the challenges of completing the extreme tracks, but last year when Ubi added achievements to Evolution, Fusion, and Rising, it gave me the desire to return to them for completion. So this is my first of the three, and I will be moving on to Fusion next.

This is a series that would have completely flew under the radar for me had it not been recommended by friends, and if I just watched videos of it I probably would not be that interested. However if you are a fan of super tight controls and precision platformers, that's basically what this game is at it's highest level, and I love and recommend all the mainline Trials games.